From Longman Dictionary of Contemporary Englishexcess baggage/luggageexcess baggage/luggageTTAbags or cases that weigh more than the legal limit that you can take on a plane → excess
Examples from the Corpus
excess baggage/luggage• And psychically speaking, I can't help feeling they carry a little too much excess baggage.• When you had those you could drop, junk and forget the rest, which were only a burden or excess baggage.• With hips at 44.5 inches and thighs at 25 inches, it was no wonder Rudolph had been complaining about excess baggage. 